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The Nobel prize 100 years on

The photoelectric effect

Einstein’s work on the photoelectric effect started the quantum revolution in physics and has many present-day applications

The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.

Einstein’s explanation of the photoelectric effect regarded electromagnetic radiation as a stream of quanta (photons), providing evidence of wave–particle duality, which is fundamental to quantum mechanics.

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Previous

Orbits and astronauts

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Lene Hau: 1959–

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